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Introduction

The purpose of this wiki is to describe the steps taken to get a working ITN & Urban Paths database working with POSTGIS and pgRouting.

System Architecture

Data Load

The primary data load was completed using the excellent Go Loader from Snowflake Software. This loaded the ITN and Urban Paths data in for the whole of Wales into a POSTGIS database and created the road name attributes. However, the GO Loader software for POSTGIS did not handle the Road Routing Information (RRI) or grade separation elements to the ITN network. This is an essential part of creating a topologically correct network that will generate accurate routes and travel times.